Support either shell as the login shell via stow selection (merges the
bashed branch in). shell/ holds shared POSIX env + interactive config;
each shell loads its own rc natively.
- zsh: add .zshenv (sets ZDOTDIR+env early), rename rc -> .zshrc, add
login-only .zprofile (pyenv --path)
- bash: add ~/.bash_profile + ~/.bashrc stubs, .config/bash/{rc,prompt}
- shell: profile is POSIX env-only (no zsh-rc source); path rewritten
POSIX + idempotent (flat ~/.local/bin, no subdir recursion); new
interactive sources aliases/functions + pyenv shims
- drop dead shell/.zprofile symlink; move ZDOTDIR out of exports
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
